Things have changed a lot since then but logic is still logic. I think you'll really enjoy it. If you want to make it an enhancement anyone can use, then I'd be happy to post it out so it's available to everyone through HPM.
One thing I'd absolutely use is chat gpt. It is a great resource. I asked to explain a piece of code from the driver and you can see it's response. You can also ask it to write code but it's not always correct.
I'll give you a hand if you get stuck.
explain this function: def purgeExpiredRecords(retainList){
log ("purgeExpiredRecords", "Purging expired records!", 1)
int maxRecords = 31 * 24
int i = 0
while ( i < maxRecords ){
variable = "R-${i}"
def value = state."${variable}"
if (value != null ){
//log.info ("State Variable ${variable} exists and value is: ${value} " )
//So there is state variable by this name. Let's see if it is in the retainList
if ( retainList.toString().contains(variable) == true ){
log ("purgeExpiredRecords", "Preserved record: " + variable , 1)
}
else {
state.remove(variable)
log ("purgeExpiredRecords", "Purged record: " + variable , 1)
}
}
//A small pause to stop the driver from hogging all the resources as this is an intensive loop otherwise.
pauseExecution(10)
i++
}
}
ChatGPT
The provided function, purgeExpiredRecords, is designed to remove expired records from a state based on a given retainList. Here is a breakdown of how the function works:
It begins by logging a message indicating that the purging of expired records is starting. The log message is printed with a severity level of 1.
The variable maxRecords is set to the value of 31 multiplied by 24, which equals 744. This represents the maximum number of records to be checked.
A loop is initiated with the variable i starting at 0. The loop continues as long as i is less than maxRecords.
Inside the loop, a new variable named variable is assigned a string value in the format "R-${i}", where ${i} represents the current value of i.
The function attempts to retrieve the value of the state variable named ${variable}. The state object is assumed to be a container for storing variables.
If the retrieved value is not null, it means that a state variable with the name ${variable} exists.
The function checks if the retainList contains the variable by converting retainList to a string and using the contains method. If the retainList does contain the variable, a log message is printed indicating that the record is preserved. Otherwise, the state variable ${variable} is removed, and a log message is printed indicating that the record has been purged.
After processing each record, the function pauses execution for 10 units of time. This pause helps prevent excessive resource usage during the intensive loop.
The variable i is incremented by 1, and the loop continues until i reaches maxRecords.
In summary, the purgeExpiredRecords function iterates over a range of record names and checks if each record exists in the retainList. If a record is not in the retainList, it is removed from the state.
